Read More

The Democratic Unionist Party have said that they will completely withdraw their vital support for the Tories if the deal does pass, and that would mean that Theresa May wouldn't be able to win any votes without opposition support.

As above, there'd be enormous pressure for a General Election and Jeremy Corbyn would have a good chance of becoming Prime Minister.

Boris Johnson as Prime Minister (or another Tory)

As scary as it sounds, this is also a possibility.

If Mrs May does leave Downing Street, there'll be an almighty fight amongst Tories to replace her as Prime Minister.

Boris Johnson on the Andrew Marr show yesterday. He again criticised Theresa May's deal and only thinly disguised his desire to replace her (Image: Getty Images)

Contenders for the leadership include former foreign secretary Boris Johnson. He's made no secret of his desire to enter Number 10.

His brazen opportunism shone through when he was one of the first ministers to resign from the Government when Mrs May first unveiled her plan in July.

Read More

We'd also have to hope that the World Trade Organisation makes sure that we're treated fairly by other countries who would impose trade tariffs on us.

Tories like Johnson and Jacob Rees-Mogg have suggested that we could have a 'managed' no deal, but given that preparation for this outcome have been virtually non-existent, this is an enormous risk for the country to take.

Brexit CANCELLED

Yes, it really could happen. Some MPs have already called for Article 50 - the part of the treaty with the European Union that triggered the process of leaving - to be withdrawn permanently.

With the European Court of Justice's ruling today that the UK can cancel Brexit without the EU's permission, here's a good chance that it won't happen at all. (Image: PA)

Read More

Today, that prospect actually became more likely because the European Court of Justice ruled that the UK can withdraw Article 50 WITHOUT the EU's permission.

As critics fear that there is no longer any time to agree any form of Brexit, the court's decision has fuelled the call of some Remainers to think again about the decision to leave.

Brexit jargon-busting - what does it all mean?

- Backstop: this is the intended safety net to avoid a hard border in Northern Ireland. It's only meant to come into force if a deal between the UK and the EU cannot be agreed before the end of the transition period in December 2020. A deal is needed to make arrangements for the fact that the UK will cease to be a member of the single market when it leaves the EU, and so goods crossing borders will need to be inspected.

- Transition period: The period between the UK leaving the EU on 29 March 2019 and the start of future arrangements for trade in January 2021. As of yet, there is still no agreement on future arrangements, that is set to be decided after the UK has formally left.

The EU insists that the backstop can only apply to Northern Ireland, that would see the territory staying in the customs union and large parts of the single market, while the rest of the UK would leave both. That would create a border down the Irish sea, and is completely unacceptable to both the Tories and Labour.

The other option is to have the whole of the UK in the backstop - i.e. the customs union - for a limited time after the transition period. That's something which Theresa May has called for, but it is fiercely opposed by Brexiteers and Labour, as well as the EU.

- Customs Union: In general, a customs union is a trade agreement which allows frictionless trade (no tariffs or taxes on imports of foreign goods) between two countries. The EU's customs union includes all its member states, as well as some smaller non-EU members. It forbids members from independently negotiating trade agreements with other countries. So you can see why May's preferred option for the backstop is so hated by the free trade buccaneers in the Brexit wing of the Tory party.

- European Court of Justice: The EU's highest legal authority. It rules on disputes over EU treaties and laws. Its decisions are binding on EU institutions as well as member states like the UK.

- Single Market: This is the area which covers EU member states - as well as some non-members such as Norway - and imposes the 'four freedoms' of goods, services, people and money. Countries within the single market share common rules and regulations to make it easy for companies to trade across borders.

- European Economic Area: This includes all the EU's member states, as well as Norway, Liechtenstein and Iceland. Trade and people are able to move freely between these countries and members must therefore agree to single market rules as well as the EU's 'four freedoms'. However, the three 'other' countries are not part of the EU's political institutions like the Common Agricultural or Fisheries policies. Crucially, members of the EEA who aren't members of the EU are able to negotiate trade deals with other countries independently of the EU.

- European Free Trade Association: This organisation is made up of four countries: Norway, Switzerland, Iceland and Liechtenstein. They are able to trade with the single market but must accept its rules in return. They're not in the customs union and so are able to negotiate trade deals with other countries.

A second vote

The People's Vote campaign for a second referendum has gathered increasing momentum as it has become clear what damage that a Tory-led Brexit could do.

Labour's shadow Chancellor John McDonnell and other members of Jeremy Corbyn's team have said that they could support another referendum, as have numerous lower-ranking Labour and Tory figures.

With alternative options to May's deal so thin on the ground, if she loses her vote tomorrow, there'll be pressure from all sides of Parliament to call a second vote.

May somehow WINS the vote on her deal

This is possible, just about. The rest of the EU have backed the deal, which ends free movement and will mean that the UK no longer pays the EU billions of pounds a year to be a member.

Members of Mrs May's own party hate the deal, mainly because the UK will have no ability to leave the so-called backstop - the mechanism set up to prevent a hard border between Northern Ireland and the Republic.

Up to 200 members of her own party could be set to vote against it unless Mrs May can get further concessions from the EU.

Read More

If May is able to negotiate a way for Britain to leave the backstop without 'permission' of the EU - or make it look like we can - then she may win the backing of her party and some Labour MPs, which could be enough to win the vote.

It's very unlikely, but we thought we had to mention it.

The 'Norway option'

Assuming that May's deal will be voted down tomorrow, the UK could move towards entering the European Economic Area.

It would give the UK the ability to trade freely with the rest of the EU while not being in it, but we'd still have to accept free movement - which many Leavers are opposed to - and we wouldn't have a say in EU decisions which will still affect us.

Labour and Jeremy Corbyn have also rejected this option, as have Tory Brexiteers.